CN213172433U - External refining system based on bottom powder injection - Google Patents
External refining system based on bottom powder injection Download PDFInfo
- Publication number
- CN213172433U CN213172433U CN202020434545.4U CN202020434545U CN213172433U CN 213172433 U CN213172433 U CN 213172433U CN 202020434545 U CN202020434545 U CN 202020434545U CN 213172433 U CN213172433 U CN 213172433U
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- powder
- spray gun
- induction furnace
- powder spraying
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- 239000000843 powder Substances 0.000 title claims abstract description 47
- 238000007670 refining Methods 0.000 title claims abstract description 18
- 238000002347 injection Methods 0.000 title claims description 20
- 239000007924 injection Substances 0.000 title claims description 20
- 238000005507 spraying Methods 0.000 claims abstract description 35
- 239000007921 spray Substances 0.000 claims abstract description 33
- 239000007789 gas Substances 0.000 claims abstract description 30
- 230000006698 induction Effects 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000011261 inert gas Substances 0.000 claims abstract description 8
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 6
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 6
- 239000004571 lime Substances 0.000 claims abstract description 6
- 239000002893 slag Substances 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 27
- 239000010959 steel Substances 0.000 claims description 27
- 238000010410 dusting Methods 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000008188 pellet Substances 0.000 claims description 3
- 230000009466 transformation Effects 0.000 abstract 1
- 239000011449 brick Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The utility model relates to an outer refining system of stove based on powder is spouted to bottom, including the induction furnace, the induction furnace lower extreme is through spraying part and the portion intercommunication that dusts, spouts inert gas or powder material from the bottom, and the induction furnace upper end is equipped with the spray gun, throws lime or slag bobble. The utility model discloses safety ring protects also makes the gas flow rate improve, improves and equips the efficiency, can install the transformation on current device, easy operation.
Description
Technical Field
The utility model relates to an external refining system, concretely relates to external refining system based on powder is spouted to bottom belongs to metallurgical field.
Background
The external refining is a technique of transferring a process performed in a steel-making furnace, such as desulfurization, decarburization, homogenization of molten steel composition and temperature, and removal of inclusions, to a ladle. The key of the new process for realizing the refining of the powder sprayed from the bottom of the steel ladle is that powder particles are smoothly and stably sprayed into a molten pool through gaps of air bricks. Powder-injection metallurgy is a rapid refining method in which a spray gun made of refractory material is inserted into molten iron or molten steel for spraying. Inert gas is blown into the steel ladle through the spray gun so as to stir the molten steel, the temperature and the chemical composition of the molten steel are uniform, and the removal of inclusions or the control of the form of the inclusions are promoted. The external refining technology is an important refining process part in the steelmaking process, and can adjust the steel components and the temperature of molten steel.
The prior art often faces the operation that the ladle can blow gas at the bottom and can not blow powder at the bottom, which is not beneficial to the continuous development of the metallurgical industry and the effective implementation of intensive production. The phenomenon of slow production rhythm of waste injection materials often occurs in the steel production process. Therefore, an external refining system for powder injection at the bottom of the ladle is provided.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an external refining system based on powder injection at the bottom of the ladle through powder injection at the bottom of the ladle to combine the mode of throwing lime or slag in to the ladle, make external refining technology perfect more.
The technical scheme of the utility model is specifically as follows:
the external refining system based on bottom powder injection comprises an induction furnace, wherein the lower end of the induction furnace is communicated with a powder injection part through an injection part, inert gas or powder materials are injected from the bottom, and a spray gun is arranged at the upper end of the induction furnace and used for throwing lime or steel slag pellets.
Further, the injection part comprises a conical outer sleeve, an injector arranged at the inner lower end of the conical outer sleeve, and a spray gun tube arranged at the upper end of the injector and communicated with the injector, wherein a dispersive gun opening is formed in the nozzle of the spray gun, and a piston sliding sheet is arranged near the upper end of the nozzle of the spray gun.
Furthermore, a temperature detector and a potentiometer are arranged beside the spray gun at the upper end.
Further, the powder spraying part comprises a powder spraying tank, the powder spraying tank is communicated with a gas bag connected with a plurality of gas cylinders, the outlet end of the powder spraying tank is communicated with the spraying part, a flow meter and a pressure gauge are arranged on a pipeline for communicating the gas bag with the powder spraying tank, and the pressure gauge is arranged on a pipeline for communicating the outlet end of the powder spraying tank with the spraying part.
Furthermore, the conical outer sleeve comprises a high-temperature-resistant daub layer, and a high-temperature-resistant and friction-resistant ceramic layer is arranged on the periphery of the daub layer.
The bottom of the spraying part is provided with a sprayer which provides stable and sufficient power for spraying powder.
The spraying component utilizes the air brick at the bottom of the ladle to spray, the width of the slit of the air brick on the spray gun is 0.15-0.3mm, the length is 10-30mm, a dispersion type inlet is formed, the air permeability is stable, the impurity removal effect is good, and the molten steel can be effectively prevented from permeating. Meanwhile, the piston sliding sheet is arranged, so that molten steel can be effectively prevented from permeating.
The existing powder spraying tank adopted by the invention can not only store materials, but also avoid blockage caused by narrow and small bottom due to the porous suction design of the bottom.
Pressure gauges are arranged at two positions in the system, so that the air tightness of the device can be detected, and air leakage is prevented.
A temperature detector is arranged above an induction furnace (ladle) in the device, and a thermocouple is used for measuring the reaction temperature of the molten steel in the molten steel. The potentiometer can measure the liquid level of the molten steel in the ladle.
Compared with the prior art, the utility model discloses can reach following technological effect.
1. The device is safe and environment-friendly, eliminates adverse factors in the prior art, improves the gas flow rate and improves the equipment energy efficiency.
2. Can be installed and transformed on the existing device, and is simple to operate.
Drawings
Fig. 1 is a schematic structural view of the system of the present invention;
fig. 2 is a schematic structural view of the injection member of the present invention;
wherein: 1-gas cylinder, 2-first regulating valve, 3-gas bag, 4-flowmeter, 5-pressure gauge, 6-second regulating valve, 7-charging port, 8-powder spraying tank, 9-spray gun, 10-thermometer, 11-potentiometer, 12-induction furnace, 13-spray component, 13.1-sprayer, 13.2-conical outer sleeve, 13.3-spray gun tube, 13.4-piston sliding vane and 13.5-dispersive gun mouth.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Unless otherwise defined, technical or scientific terms used in the embodiments of the present application should have the ordinary meaning as understood by those having ordinary skill in the art to which the present invention belongs. The use of "first," "second," and similar language in the embodiments of the present invention does not denote any order, quantity, or importance, but rather the terms "first," "second," and similar language are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. "Upper," "lower," "left," "right," "lateral," "vertical," and the like are used solely in relation to the orientation of the components in the figures, and these directional terms are relative terms that are used for descriptive and clarity purposes and that can vary accordingly depending on the orientation in which the components in the figures are placed.
As shown in fig. 1, the external refining system based on bottom powder injection of this embodiment includes an induction furnace 12, the lower end of the induction furnace 12 is communicated with a powder injection part through an injection component 13, inert gas or powder material is injected from the bottom, and a spray gun 9 is arranged at the upper end of the induction furnace, and lime or steel slag pellets are thrown. A temperature detector 10 and a potentiometer 11 are arranged beside the upper spray gun 9. The thermometer 10 measures the reaction temperature of molten steel by inserting a thermocouple into molten steel. The potentiometer 11 can measure the level of molten steel in the ladle.
As shown in fig. 2, the spraying component 13 includes a conical casing 13.2, an injector 13.1 disposed at the inner lower end of the conical casing 13.2, a spray gun tube 13.3 disposed at the upper end of the injector 13.1 and communicated with the injector 13.1, a diffuse muzzle 13.5 disposed at the nozzle of the spray gun, and a piston slide 13.4 disposed near the upper end of the nozzle 13.3 of the spray gun. The conical outer sleeve 13.3 comprises a high-temperature-resistant daub layer, and a high-temperature-resistant and friction-resistant ceramic layer is arranged on the periphery of the daub layer. The conventional air brick is replaced with the injection member 13.
The portion of dusting is including dusting jar 8, and 8 upper ends of dusting jar are charge door 7, and 3 inert gas storage bottles are gas cylinder 1 promptly and pass through pipeline and 3 import intercommunications of gas bag, are equipped with first governing valve 2 on the pipeline, because need more gas, so can communicate several storage bottle, even can be different gas. The first regulating valve 2 and the second regulating valve 6 can regulate the flow of gas and the entering amount of powder. The gas bag 3 has simple operation, reasonable and safe design and can continuously and stably output gas.
Besides the first adjusting valve 2, the outlet pipeline of the gas bag 3 is also provided with a flow meter 4 and a pressure gauge 5, and the flow meter 4 can display the flow of the gas and obtain the desired flow. The pressure gauge 5 is sensitive to an elastic element and measures and indicates a gauge above ambient pressure, here for measuring the output pressure of the inert gas.
The charging port 7 is used as an inlet of powder to be blown into the ladle, the powder injection tank 8 can be used for storing the material blown into the ladle,
inert gas in the gas cylinder 1 can enter the gas bag 3 through the first regulating valve 2, and the gas bag 3 has the functions of storing the gas for a short time and reducing the pressure. The gas can then be blown into the molten steel at a precisely controlled flow rate by means of a flow meter 4 and a pressure gauge 5.
The outlet pipeline of the air bag 3 has two directions, namely directly communicated with the spraying part 13 to be blown into molten steel, and is communicated into the powder spraying tank 8 to be mixed with powder in the tank and is communicated into the spraying part 13. Let in and spray 13 pipeline and 8 outlet pipeline intercommunications of dusting tank, it still is equipped with two bypasses here, one is from 3 outlet pipeline one ends of gas bag along separate routes and 8 bottom intercommunications of dusting tank, another is from 3 outlet pipeline other ends of gas bag along separate routes, communicate with 3 outlet pipeline of gas bag and 8 outlet pipeline's of dusting tank intercommunication, make the powder can not block up in the gas cylinder bottom, also can better mixture, second governing valve 6 is located the front end pipeline along separate routes of pipeline, each divides all to be equipped with first governing valve 2 on the road.
After the material is added into the feed inlet 7, a valve between the feed inlet 7 and the powder spraying tank 8 is closed, so that air leakage during gas introduction and mixing is avoided, and whether the valve leaks air or not is checked. The powder spraying tank 8 is an existing device, the bottom of the powder spraying tank 8 is a porous entrainment device, a valve is mounted to adjust the flow of materials entering the spray gun, and a pressure gauge is mounted at the same time.
The material entering the injection component 13 is directly blown into the induction furnace 12 by a spray gun, the width of a slit of an air brick on the spray gun is 0.15-0.3mm, the length of the slit is 10-30mm, a piston slide sheet 13.4 in the muzzle of the spray gun can be closed when the spray gun does not work, and the spray gun is closed after powder injection is stopped so as to prevent molten steel from permeating. A thermocouple thermometer and a potentiometer for measuring the position of molten steel are arranged above the induction furnace 12. A spray gun is also arranged above the steel ladle and can throw lime or steel slag to the steel ladle.
The spray gun 9 is an existing mechanism, and the muzzle of the spray gun is a large straight-through muzzle which can control the throwing direction and force. The bottom of the powder spraying tank 8 at the bottom of the powder spraying tank is provided with a porous entrainment device, so that the blockage caused by the narrow and small bottom can be avoided.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. An external refining system based on bottom powder injection is characterized in that: the device comprises an induction furnace, wherein the lower end of the induction furnace is communicated with a powder spraying part through a spraying part, inert gas or powder materials are sprayed from the bottom, and a spray gun is arranged at the upper end of the induction furnace and used for throwing lime or steel slag pellets; the spraying component comprises a conical outer sleeve, an ejector arranged at the inner lower end of the conical outer sleeve, and a spray gun pipe arranged at the upper end of the ejector and communicated with the ejector, wherein a dispersive gun opening is formed in the nozzle of the spray gun, and a piston sliding vane is arranged near the upper end of the nozzle of the spray gun; the powder spraying part comprises a powder spraying tank, the powder spraying tank is communicated with a gas bag connected with a plurality of gas cylinders, the outlet end of the powder spraying tank is communicated with the spraying part, a flow meter and a pressure gauge are arranged on a pipeline for communicating the gas bag with the powder spraying tank, and the pressure gauge is arranged on a pipeline for communicating the outlet end of the powder spraying tank with the spraying part.
2. The bottom dusting based off-furnace refining system of claim 1, wherein: a temperature detector and a potentiometer are arranged beside the spray gun at the upper end.
3. The bottom dusting based off-furnace refining system of claim 1, wherein: the conical outer sleeve comprises a high-temperature-resistant daub layer, and a high-temperature-resistant and friction-resistant ceramic layer is arranged on the periphery of the daub layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020434545.4U CN213172433U (en) | 2020-03-30 | 2020-03-30 | External refining system based on bottom powder injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020434545.4U CN213172433U (en) | 2020-03-30 | 2020-03-30 | External refining system based on bottom powder injection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213172433U true CN213172433U (en) | 2021-05-11 |
Family
ID=75763768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020434545.4U Active CN213172433U (en) | 2020-03-30 | 2020-03-30 | External refining system based on bottom powder injection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213172433U (en) |
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2020
- 2020-03-30 CN CN202020434545.4U patent/CN213172433U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231115 Address after: No.36, gangkun Road, JinFang street, Anning City, Kunming City, Yunnan Province Patentee after: WUGANG GROUP KUNMING IRON AND STEEL Co.,Ltd. Address before: 661100 Main Street (Park), Yuguopu Town, Mengzi City, Honghe Hani and Yi Autonomous Prefecture, Yunnan Province Patentee before: HONGHE IRON & STEEL Co.,Ltd. |